Evaluating the impact of increasing temperatures on changes in Soil Organic Carbon stocks: sensitivity analysis and non-standard discrete approximation

Abstract The SOC change index , defined as the normalized difference between actual Soil Organic Carbon and value assumed at an initial reference year, is here tailored to RothC carbon model dynamics. It assumes a baseline of equilibrium under constant environmental conditions. A sensitivity analysis performed evaluate response changes in temperature, Net Primary Production (NPP), land use soil class (forest, grassland, arable). non-standard monthly time-stepping procedure has been proposed approximate Alta Murgia National Park, protected area Italian Apulia region, selected test site. exhibits negative trends for all considered without fertilizers. trend arable can be inverted by suitable organic fertilization program proposed.